Which simply means that the shield is black, with a white or silver
horizontal band across the centre. Sable signifies Constancy or (rarely)
Grief; Argent signified peace and sincerity; Fesse symbolised the ancient
military Belt and Girdle of Honour. The simplicity of the design would
normally suggests that it is very old, but as the Arms are not registered,
this may not be so.

Fairbairn's Crests of the Families of Great Britain & Ireland
:

LUCEY, Out of a Ducal Coronet, a Boar's head and neck, between wings.

The various significances are as follows:

Ducal Coronet - not known, crowns had different meanings, some being:
Sovereignty, Victory and Royalty

There are at least 14 different Arms for Lucy, all being quite similar
but distinct, and all based on three lucies (or pike fish). Different colours
are used in some, but blue, silver, gold and red frequently appear.

The following English counties are where various Lucy arms were granted:

Warwick, Herts, London formerly of Antwerp, Dorset, and Kent.

Artists devising heraldic images were not above using puns, and the
pike is referred to in heraldry as a luce. Apparently a number of royal
and otherwise noble people had fishes in their Arms, and thus the fishes
were considered highly (but then, everything in Heraldry existed to be
highly considered!)

The crest (where there is one) is generally similar in description to
that given above for Lucey.